| ORIGINAL ARTICLE |
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| Year : 2023 | Volume
: 20
| Issue : 1 | Page : 83 |
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Postoperative pain after endodontic treatment of mandibular molars with two different instrumentation techniques: A randomized clinical trial
Ahmad Nouroloyouni1, Mehrdad Lotfi2, Shahriar Shahi2, Saeed Rahimi2, Sara Noorolouny3, Amin Salem Milani2
1 Department of Endodontics, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran
2 Department of Endodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
3 Department of Pediatric Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran
Correspondence Address:
Dr. Ahmad Nouroloyouni
Department of Endodontics, School of Dentistry, Ardabil University of Medical Sciences, Ardabil
Iran
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/1735-3327.382136
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Background: This study compared postoperative pain after endodontic treatment of mandibular molars with asymptomatic irreversible pulpitis with the RaCe rotary system and the crown-down versus the step-down technique.
Materials and Methods: In this randomized clinical trial, 70 mandibular 1st and 2nd molars with asymptomatic irreversible pulpitis and normal periradicular state were randomly assigned to two groups for single-visit endodontic treatment with RaCe rotary system and the crown-down and the step-down technique (n = 35). Postoperative pain was assessed at 6, 12, 24, 48, 72, and 168 h postoperatively, using a Visual Analog Scale. Data were analyzed using SPSS 17 by repeated measures ANOVA, Chi-square test, independent sample t-test, and lLeast sSignificant Ddifference test. P < 0.05 was considered statistically significant.
Results: The two groups were not significantly different regarding the pain scores at any time point (P > 0.05). Within-group comparisons showed a significant reduction in pain score over time, starting from 12 to 168 h, postoperatively (P < 0.05).
Conclusion: The crown-down and step-down techniques had no significant difference regarding postoperative pain after endodontic treatment of mandibular molars with asymptomatic irreversible pulpitis with the RaCe rotary system.
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